Watch stem and crown setting



Feb. 20, 1934. H. GISIGER WATCH STEM AND CROWN SETTING Filed Aug. 3, 1931 2 Sheets-Sheet l INVENTOR f/A/VS 6/5/65 BY i ATTORNEYS Feb. 20, 1934. H GlslGER I 1,948,171

WATCH STEM AND CROWN SETTING Filed Aug. 5, 1931 ZSheets-Sheet 2 INVENTOR 9 A A/VS G/S/GEB TTO EYS Patented Feb. 20, 1934 WATCH STEM AND CROWN SETTING Hans Gisiger, Brooklyn, N. Y., assignor to Florence Gisiger, Waltham, Mass.

Application August 3, 1931, Serial No. 554,778, and in Switzerland July 26, 1926 2 Claims.

This invention relates to improvements in watches and has particular reference to a stem and crown setting therefor, this application being a continuation in part of my application Serial Number 188,067, filed May 2nd, 1927.

An object of the invention is to provide an improved mounting for the stem and crown of a Watch which will afford an adequate support for the stem and which is so constructed and disposed relative to the frame of the watch movement and the case thereof that the entry of dust into the case or movement, in the vicinity of said stem, will be reduced to a minimum.

The above and other objects will appear more clearly from the following detailed description when taken in connection with the accompanying drawings which illustrate a preferred embodiment of the inventive idea.

In the drawings:

Fig. 1 is a fragmentary vertical longitudinal section through a watch case, showing, in plan, the movement frame of the watch with the present setting or mounting in place, and the stem being illustrated in its winding position.

Fig. 2 is a view similar to Fig. 1, showing the stem and associated parts in setting position.

Fig. 3 is an enlarged plan view, partly broken away and shown in section, of the stem mounting of the present invention, the crown of said stem being removed.

Fig. 4 is a view, partly in elevation and partly in section, taken on a vertical plane through the stem and illustrating the setting of the present invention and its associated parts, and

Fig. 5 is a detailed perspective View of the pendant which constitutes the stem setting.

The setting or mounting of the present invention is especially applicable to watches wherein the movement frame mounted within the watch case 6 is composed of two opposed mounting plates 7 and 8 the inner faces of which abut each other and which support various elements of the watch movement and the winding and setting mechanisms therefor, the latter mechanisms being controlled, in a manner to be later more specifically described, by the customary stem 9 having the crown 10.

In accordance with the present invention the inner faces of the opposed plates '7 and 8 are provided with a bore 11 into which there is driven or otherwise inserted so as to have a tight fit, a pendant 13 in the form of a bearing, made preferably of tempered steel. This pendant, due to its tight fit in the bore, will remain in position through frictional contact with the wall of said bore but, in order to absolutely insure against any possibility of displacement of the pendant a lock 14 (Fig. 3) in the form of a flat strip may be secured to the mounting plate 7 adjacent the stem 9 and engaged in a slot 14 provided in the pendant 13. An annular shoulder 15 is formed on the pendant 13 at the inner end of an outwardly extending flange 16 which combines with the outer end of the pendant proper to constitute the socket 17 for a purpose which will presently appear. The shoulder 15 abuts the outer edges of the movement plates 7 and 8 and is interposed between the same and the watch case 6, the latter being provided with an opening through which the flange 16 of the pendant extends. This construction provides an assembly which affords adequate protection for the stem 9 against breaking from lateral strain thereon, and the interposition of the shoulder 15 between the movement plates and the watch case assists in reducing to a minimum the possibility of dust entering the watch movement around the stem 9.

The flange 16 of the pendant is the only portion thereof which extends outwardly beyond the watch case 6 and the socket 17 formed by said flange is adapted to receive a boss 18 formed on the crown 10 and in which the outer end of the stem 9 is secured in the customary manner.

The stem 9 is associated with the usual winding and setting mechanisms which are controlled from said stem by instrumentalities such as illustrated in the Swiss patent to Gisiger, Number 121,035. These instrumentalities, which are more or less conventionally illustrated in the present drawings, include a setting lever 19, one end of which is provided with a laterally extending pin 20 which projects through the cut away portion 21 of the pendant 13 and extends into a groove 22 formed in the stem 9 so as to prevent withdrawal of said stem from its mounting, the engagement of said pin in said groove effecting a rocking movement of the lever 19 when the stem is pulled outwardly for setting purposes or pushed inwardly to its normal winding position.

Mounted on the stem 9 is the winding pinion 23 of the winding mechanism of the watch, said pinion having teeth 24 adapted to engage the sliding clutch 25 which is under the control of the lever 26, in turn operated by the lever 19. Thus when the stem 9 is pulled outwardly to set the hands of the watch, the lever 19 is rocked and thereby actuates the lever 26 in the usual manner to disengage, as shown in Fig. 2, the clutch 25 from the teeth of the pinion 23 and engage said clutch with a transmission pinion 27 of the setting mechanism. When the stem 9 is pushed inwardly the parts are restored to the position shown in Fig. l and the winding pinion 23 is then operative to rotate the gear 28 of the winding train.

What is claimed is:

1. In a watch, a case, a movem nt frame within said case and including plates having abutting portions the inner opposed surfaces of which are bored to form an opening, a winding stem extending into said opening, and a pendant fitted into said opening and forming a bearing for said stern, pendant having a socket at its outer end into which said stem projects and which extends outwardly through said case, said pendant further having an intermediate annular shoulder projecting therefrom which is interposed between and in engagement with said plates and case.

2. In a watch, a case, a movement frame within said case and including plates having abutting portions the inner opposed surface of which are bored to form an opening, a winding stem extending into said opening, and a pendant of harder material than said plates and case fitted into said opening and forming a bearing for said stem, said pendant having a socket at its outer end into which said stem projects and which extends outwardly through said case, said pend ant further having an intermediate annular shoulder projecting therefrom which is interposed between and in engagement with said plates and case.

HANS GISIGER. 

